The Metabolism and Transport of Abscisic Acid During Grain Fill in Wheat

Dewdney, S. J.; McWha, James A.

doi:10.1093/jxb/29.6.1299

Cited by 36 publications

(12 citation statements)

References 1 publication

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“…Grain pre‐soaking in GA 3 , IAA or ABA appeared to mitigate, either partially or completely, the effects of stress induced by seawater on yield components of wheat plants. The increase in wheat productivity is probably due to the increased rate of translocation of photosynthates from leaves to grains caused by hormone pre‐treatments (Lovell 1971, Dewdeny and McWha 1978, Ray and Choudhuri 1981).…”

Section: Discussionmentioning

confidence: 99%

Water Relations, Abscisic Acid and Yield of Wheat Plants in Relation to the Interactive Effect of Seawater and Growth Bioregulators

Aldesuquy

Ibrahim

2001

J Agronomy Crop Science

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Irrigation of wheat plants with seawater (10 and 25 %) led to significant increases in free and bound abscisic acid (ABA) in leaves, especially at 25 %. The relative water content (RWC) and water use efficiency (calculated from grain yield, WUEG, or from biomass yield, WUEB) of the seawater‐irrigated plants were lower than those of the control. Grain pre‐soaking in gibberellic acid (GA3), indole‐3‐acetic acid (IAA) or ABA reduced the levels of accumulated ABA (free and bound) produced by seawater irrigation. The stress imposed by seawater generally reduced yield and yield components of wheat plants and the effect was more pronounced at the higher level of seawater irrigation (25 %). Furthermore, seawater treatments decreased the carbohydrate content and increased the protein content of the developing grains. The effect of seawater treatments on ion concentrations in the developing grains was not consistent. The application of growth bioregulators appeared to mitigate the effect of seawater salinity stress on wheat productivity. GA3 was the most effective hormone in this regard. The economic yield (grain yield) had a strong positive correlation with RWC, WUEG, WUEB, plant height, shoot fresh and dry weight, grain number/main spike, kernel weight and harvest index.

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Section: Discussionmentioning

confidence: 99%

Water Relations, Abscisic Acid and Yield of Wheat Plants in Relation to the Interactive Effect of Seawater and Growth Bioregulators

Aldesuquy

Ibrahim

2001

J Agronomy Crop Science

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“…Grain pre‐soaking in GA 3 , IAA or ABA appeared to counteract, either partially or completely, the effects of stress induced by seawater on yield components of wheat plants. The increase in wheat productivity was probably due to the increased rate of translocation of photosynthates from leaves to grains caused by hormonal pretreatments (Lovell 1971, Dewdney and McWha 1978, Ray and Choudhuri 1981).…”

Section: Discussionmentioning

confidence: 99%

Interactive Effect of Seawater and Growth Bioregulators on Water Relations, Abscisic Acid Concentration and Yield of Wheat Plants

Aldesuquy

Ibrahim

2001

J Agronomy Crop Science

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Irrigation of wheat plants with seawater (10 and 25 %) led to a significant increase in free and bound ABA in leaves, especially at 25 %. The relative water content (RWC), particularly at 25 %, and water use efficiency of the seawater‐irrigated plants were lower than those of the control. Grain pre‐soaking in GA3, IAA or ABA reduced the levels of accumulated ABA (free and bound) resulting from seawater irrigation. The stress imposed by seawater generally reduced yield and yield components of wheat plants, and the effect was more pronounced at the higher level of seawater (25 %). Furthermore, seawater treatments decreased the carbohydrate content and increased the protein content of the developing grains. The effect of seawater treatments on ion concentration in the developing grains was not consistent. The application of growth bioregulators appeared to mitigate the effect of seawater salinity stress on wheat productivity. Gibberellic acid gave the best effect. The economic yield (grain yield) had a strong positive correlation with RWC, water use efficiency for grain yield, water use efficiency for biomass, plant height, shoot fresh and dry weights, grain number/main spike, kernel weight and harvest index.

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“…Other authors also found a bidirectional transport of labelled molecules from a mature leaf in intact plants (Hartung 1976 in Pisum, Goldbach andGoldbach 1977 in Tritictim). In general, ABA is easily transported to the upper part of the plant (Hartung 1977 in Phaseolus, Sterret andHipkins 1980 in Malus) and to the developing seeds (Dewdney andMcWha 1978 in Triticum, Grabner et al 1980 in Vicia). In our material, the amounts of label recovered in the first fully expanded leaf of decapitated plants were greater than in the corresponding leaf of intact plants (Tab.…”

Section: Discussionmentioning

confidence: 99%

Transport and metabolism of labelled abscisic acid in broad‐bean plants (Vicia faba L.)

Everant‐Bourbouloux¹

1982

Physiologia Plantarum

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The movement of 2‐14C‐abscisic acid applied to a mature leaf of broad‐bean plants (Vicia faba L. cv. Aguadulce) was investigated by liquid scintillation counting and autoradiography. The radioactivity was readily transported into the whole plant by the phloem after 90 min. Thereafter, radioactivity moved towards the upper part of the plant, where it accumulated in the young growing leaves and in the apical bud. During transport, 2‐14C‐ ABA was slightly metabolized, and a subsequent rapid metabolism occurred in the young leaves of the apical part of the plant and in the axillary buds released from apical dominance in decapitated plants. Transport of exogenous ABA from the apical bud presented the characteristics of a diffusion transport.

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The Metabolism and Transport of Abscisic Acid During Grain Fill in Wheat

Cited by 36 publications

References 1 publication

Water Relations, Abscisic Acid and Yield of Wheat Plants in Relation to the Interactive Effect of Seawater and Growth Bioregulators

Water Relations, Abscisic Acid and Yield of Wheat Plants in Relation to the Interactive Effect of Seawater and Growth Bioregulators

Interactive Effect of Seawater and Growth Bioregulators on Water Relations, Abscisic Acid Concentration and Yield of Wheat Plants

Transport and metabolism of labelled abscisic acid in broad‐bean plants (Vicia faba L.)

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